Calculation: 1. √ 20 × √ 75 ＋ √ 35 ÷ √ 7 / 3 - (√ 3 + √ 5) square 2.4 × sin30 ° × √ 2cos4 Calculation: 1. √ 20 × √ 75 ＋ 35 △ 7 / 3 - (√ 3 + √ 5) square 2.4 × sin30 °× √ 2cos45 °× cot45 ° need correct process and answer!

Calculation: 1. √ 20 × √ 75 ＋ √ 35 ÷ √ 7 / 3 - (√ 3 + √ 5) square 2.4 × sin30 ° × √ 2cos4 Calculation: 1. √ 20 × √ 75 ＋ 35 △ 7 / 3 - (√ 3 + √ 5) square 2.4 × sin30 °× √ 2cos45 °× cot45 ° need correct process and answer!

√ 20 × √ 75 ＋ √ 35 × √ 7 / 3 - (√ 3 + √ 5) square = 10 √ 15 + 3 √ 5-8-2 √ 15 = 8 √ 15 + 3 √ 5-82.4 × sin30 ° × √ 2cos45 °× cot45 ° = 4x0.5x1x1 = 2

Calculate ① (+ 16) + (- 30) - (- 14) ② - 40-25 - (- 19) + (- 24) ③ 11 and 1 / 2-1 and 3 / 4-1 and 1 / 4 + 4 and 1 / 2

（+16）+（-30）-（-14）=16-30+14=0
-40-25-（-19）+（-24）= -40 -25+19-24 = -70
11 and 1 / 2-1 and 3 / 4-1 and 1 / 4 + 4 and 1 / 2 = (11 and 1 / 2 + 4 and 1 / 2) - (1 and 3 / 4 + 1 and 1 / 4) = 16-3 = 13

|-How to calculate 16 | + | - 24 | + | + 30 |

|-16|+|-24|+|+30|
=16+24+30
=70